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# How can I make a variation formula out of this table??

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 x 1 2 4 5 7 y 7 11 19 23 31

How can I make a variation formula out of this table??

ManuelBautista2019  Sep 14, 2017
edited by ManuelBautista2019  Sep 14, 2017
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I'm going to add a few missing terms (that fit the pattern that you gave):

x  =  1      2      3     4     5     6     7

y  =  7    11    15    19    23   27    31

Notice that as each x-term increases by 1, the corresponding y-term increases by 4.

This means that this is a linear equation with slope = 4.

y  =  mx + b                   (with m = 4)

y  =  4x + b

Now, substitute any (x,y) pair into this equation.  I'm going to use (5,23), but I could have used any pair.

23  =  4(5) + b

23  =  20 + b

3  =  b

This means that a possible equation is:  y  =  4x + 3.

geno3141  Sep 14, 2017

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